384172973 has 4 divisors (see below), whose sum is σ = 384320220. Its totient is φ = 384025728.

The previous prime is 384172927. The next prime is 384173003. The reversal of 384172973 is 379271483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148181929 + 235991044 = 12173^2 + 15362^2 .

It is a cyclic number.

It is not a de Polignac number, because 384172973 - 2⁸ = 384172717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384178973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69638 + ... + 74951.

It is an arithmetic number, because the mean of its divisors is an integer number (96080055).

Almost surely, 2^384172973 is an apocalyptic number.

It is an amenable number.

384172973 is a deficient number, since it is larger than the sum of its proper divisors (147247).

384172973 is a wasteful number, since it uses less digits than its factorization.

384172973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147246.

The product of its digits is 254016, while the sum is 44.

The square root of 384172973 is about 19600.3309410836. The cubic root of 384172973 is about 726.9573571391.

The spelling of 384172973 in words is "three hundred eighty-four million, one hundred seventy-two thousand, nine hundred seventy-three".